Currently (2024-02-02), the following ebuilds have old EAPIs within text-kit:

 app-dicts/ipadic-2.7.0-r2
 app-text/libpaper-1.1.24-r2
 app-text/libxmlpatch-0.3.3
 app-text/pspdftool-0.03
 app-text/pspdftool-9999
 app-text/sary-1.2.0-r1
 dev-tex/catdvi-0.14-r1
 dev-tex/chktex-1.7.1
 dev-tex/chktex-1.7.6